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/*
* vim:tw=80:ai:tabstop=4:softtabstop=4:shiftwidth=4:expandtab
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* (C) Copyright Kevin Timmerman 2007
* (C) Copyright Phil Dibowitz 2007
*/
#include "lc_internal.h"
#include "libconcord.h"
#ifdef WANT_HIDAPI
#ifndef LC_LIBHIDAPI
#define LC_LIBHIDAPI
#include "hid.h"
#include <hidapi/hidapi.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
/*
* Harmonies either fall under logitech's VendorID (0x046d), and logitech's
* productID range for Harmonies (0xc110 - 0xc14f)...
*
* OR, they fall under 0x400/0xc359 (older 7-series, all 6-series).
*/
#define LOGITECH_VID 0x046D
#define LOGITECH_MIN_PID 0xc110
#define LOGITECH_MAX_PID 0xc14f
#define NATIONAL_VID 0x0400
#define NATIONAL_PID 0xc359
#define USB_PACKET_LENGTH 64
hid_device *h_dev;
int InitUSB()
{
hid_init();
/*
* Note we do NOT call hid_exit() in ShutdownUSB, because you can
* never reinitialize libhidapi - and on a reset, we need
* to come back and do more stuff. So we set it up as an atexit()
*/
atexit((void(*)())hid_exit);
return 0;
}
void ShutdownUSB()
{
if (h_dev) {
hid_close(h_dev);
}
}
bool is_harmony(struct hid_device_info *dev)
{
/* IF vendor == logitech AND product is in range of harmony
* OR vendor == National Semiconductor and product is harmony
*/
if ((dev->vendor_id == LOGITECH_VID
&& (dev->product_id >= LOGITECH_MIN_PID
&& dev->product_id <= LOGITECH_MAX_PID))
|| (dev->vendor_id == NATIONAL_VID
&& dev->product_id == NATIONAL_PID)) {
return true;
}
return false;
}
/*
* Find a HID device that is a Harmony
*/
int FindRemote(THIDINFO &hid_info)
{
struct hid_device_info *devs, *cur_dev;
bool found = false;
devs = hid_enumerate(0x0, 0x0);
cur_dev = devs;
while (cur_dev) {
debug("Testing: %04X, %04X", cur_dev->vendor_id, cur_dev->product_id);
if (is_harmony(cur_dev)) {
debug("Found a Harmony!");
hid_info.vid = cur_dev->vendor_id;
hid_info.pid = cur_dev->product_id;
hid_info.ver = cur_dev->release_number;
h_dev = hid_open(cur_dev->vendor_id, cur_dev->product_id, NULL);
found = true;
break;
}
cur_dev = cur_dev->next;
}
hid_free_enumeration(devs);
if (!found || !h_dev) {
debug("Failed to establish communication with remote");
return LC_ERROR_CONNECT;
}
// Fill in hid_info
const size_t buf_len = 128;
wchar_t wide_s[buf_len];
char s[buf_len];
hid_get_manufacturer_string(h_dev, wide_s, buf_len);
wcstombs(s, wide_s, buf_len);
hid_info.mfg = s;
hid_get_product_string(h_dev, wide_s, buf_len);
wcstombs(s, wide_s, buf_len);
hid_info.prod = s;
return 0;
}
int HID_WriteReport(const uint8_t *data)
{
uint8_t newdata[USB_PACKET_LENGTH+1];
newdata[0] = 0x00;
memcpy(&newdata[1], data, USB_PACKET_LENGTH);
int err = hid_write(h_dev, newdata, USB_PACKET_LENGTH + 1);
if (err < 0) {
debug("Failed to write to device: %d (%ls)", err, hid_error(h_dev));
return err;
}
return 0;
}
int HID_ReadReport(uint8_t *data, unsigned int timeout)
{
int err = hid_read_timeout(h_dev, data, USB_PACKET_LENGTH, timeout);
if (err < 0) {
debug("Failed to read from device: %d (%ls)", err, hid_error(h_dev));
return err;
} else if (err == 0) {
debug("USB read timed out");
return 1;
}
return 0;
}
#endif
#endif
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